Peugeot 205 Mi32

mental, will be interesting to see the finished product and see what the handling etc is like. gonna be a relatively weighty beast with 2 mi16s no?
 
SoliD said:
mental, will be interesting to see the finished product and see what the handling etc is like. gonna be a relatively weighty beast with 2 mi16s no?
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I reckon it would come in at around a tonne.

Still a good 300Kg less than an Impreza...but with similar power. Then if he mods the engines, more :)

Twin engines = good.

*n
 
penski said:
Twin engines = good.

*n
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what are the engines like to balance, ie to run in sync?

if the rear was running one or two hundred rpm faster than the front then it'd make for some interesting cornering technique.
 
The_Dark_Side said:
what are the engines like to balance, ie to run in sync?

if the rear was running one or two hundred rpm faster than the front then it'd make for some interesting cornering technique.
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If you're running the same engine at each end, it's not that difficult. The extra load of the other engine being a few hundred rpm slower would lower the rpm of the 'faster' engine for the same throttle angle :)

Any 3d-5d programmable ECU would be able to rev-match the engines anyway :)

*n
 
The_Dark_Side said:
what are the engines like to balance, ie to run in sync?

if the rear was running one or two hundred rpm faster than the front then it'd make for some interesting cornering technique.
Click to expand...

Unless it was wheel spinning then engines would be running at the same (or at least very simmilar) RPM. Different throttle openings would simply cause the front/rear torque split to be varied.

Throttle sychronisation is a very minor issue compared to getting the gear linkages and clutches working together.
 
Dogbreath said:
Unless it was wheel spinning then engines would be running at the same (or at least very simmilar) RPM. Different throttle openings would simply cause the front/rear torque split to be varied.

Throttle sychronisation is a very minor issue compared to getting the gear linkages and clutches working together.
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You could probably *** one engine and have the other on idle and they will both automatically run at the same speed. Rev matching is not a problem
 
White with Rallye decals :D, white 16" Dimma alloys...tint out the rear windows so the rear lump can't be seen...
:)
 
penski said:
Rev-matching IS a problem on twin-engined cars...If both engines send power to the same axle ;)

*n
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Don't see why it would be, if the outputs are directly coupled than the RPM's will always be matched, simple as that. If the throttles were badly unsynchronised you could get to a stage when one engine is turning the other faster than it natualy wants to turn, sapping a lot of power, but relatively minor mismatches aren't going to cause that kind of problem. At a given RPM the throttle simply controls torque output of the engine, which get combined at the common driveshaft.
 
Dogbreath said:
Don't see why it would be, if the outputs are directly coupled than the RPM's will always be matched, simple as that. If the throttles were badly unsynchronised you could get to a stage when one engine is turning the other faster than it natualy wants to turn, sapping a lot of power, but relatively minor mismatches aren't going to cause that kind of problem. At a given RPM the throttle simply controls torque output of the engine, which get combined at the common driveshaft.
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Sorry - should have been a bit more specific:

If the engines are out-of-synch, vibrations in the driveline will mount up and cause component failure. Not rev-matching as such, morerev-synchronising. :)

The Autograss Specials boys found that out to their cost...But seeing as most of them build their own rigs, they just fix them as and when :)

*n
 
hello people,

i must say this is the most unusal of places to discuss cars so in-depth :D.

it is my car you're talking about here, glad to see you like it :).


i see everyone's main concern (across the world) is synchronisation... there
are only 2 things that are important that engines need to have - the same
rev-range and the same gearing. apart from that, throttle opening has to be
balanced nicely and preferably the clutch biting point too (but i guess this
can be a little biased in order to achieve better starts etc). other than that,
engines don't engine-brake eachother but help eachother instead and thus
automatically synchronise several thousand times per minute :).


anyway, here's a little update for you :).


Phase 2: Rear Engine Installation


after transporting the car to another workshop, it was time to get our Mi16 engine out of
the garage to put it where it belongs and matters the most - in the back of the 205 Mi32 :lol:.



you can find the complete story (with 46 pics) on THIS PAGE.

it covers another 3 weeks of work - much longer than we had planned, but it wasn't our fault...


thanks.
 
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